[ Thanks to An Anonymous Reader for
this link. ]
“(This has been tested on several versions of Firefox
and Konqueror with nspluginviewer and the official plugin from
Adobe on a 64bit machine, several distros)“Many have probably figured this nifty trick out by now, as it
has indeed existed for ages. But still — if there is anyone out
there not aware of this method, here it is: So, this is in a way by
far the most simplistic way of downloading videos off of youtube,
viddler, blip.tv etc on Linux, not requiring any kind of programs
(besides Firefox itself), add-ons or scripts.”